By using a thin convex lens, you project the image of an object through the lens onto a screen to build up a dataset of multiple object and images distances,
You then plot a graph of on the y-axis and on the x-axis.

Select all of the answers that correctly apply to the graph and subsequent analysis.

ans
The focal length is the y-intercept.

The graph will be a straight line with a positive gradient.

The gradient of the line is the focal length.

The image can be either real or virtual in order to build up a dataset using this method.

The graph will be a curved line.

The gradient of the line is -1.

The graph will be a straight line through the origin.

The gradient of the line is 1.

The graph will be a straight line with a negative gradient.

The image must be real in order to build up this data set.

The y-intercept and x-intercept should be equal.

The focal length is the inverse of the y-intercept.